Observation of electric current induced by optically injected spin current
Observation of electric current induced by optically injected spin current
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DOI：
10.1063/1.2748843
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发表时间：
2006-08
影响因子：
4
通讯作者：
X. Cui;S. Shen;Jian Li;W. Ge;Fu-Chun Zhang
中科院分区：
文献类型：
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作者：
X. Cui;S. Shen;Jian Li;W. Ge;Fu-Chun Zhang
垂直入射的线偏振光将自旋电流注入具有Rashba自旋轨道耦合的二维电子气带中。作者报告了电流的观察时，这种光洒在十字形InGaAs scinInAlAs量子阱Rashba系统的交界处的附近。实验观察到该电流的极化依赖性与自旋电流的极化依赖性相同。作者将观察到的电流归因于光注入的自旋电流在交叉点的散射。
Linearly polarized light at normal incidence injects a spin current into a strip of two-dimensional electron gas with Rashba spin-orbit coupling. The authors report observation of an electric current when such light is shed on the vincinity of the junction in a crossbar-shaped InGaAs∕InAlAs quantum well Rashba system. The polarization dependence of this electric current was experimentally observed to be the same as that of the spin current. The authors attribute the observed electric current to the scattering of the optically injected spin current at the crossing.